From ef17178cf5abe304b2098a50f580e8c19e5084d2 Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Thu, 3 Sep 2015 17:18:49 -0400 Subject: [PATCH] i40e: use priv flags to control flow director Some customers wish to be able to control our hardware specific feature called flow director, at runtime. This patch enables ethtool priv flags to control this driver/hardware specific feature. ethtool --set-priv-flags ethX flow-director-atr off NOTE: the ethtool ntuple interface controls the flow-director sideband rules. Change-ID: Iba156350b07fa2ce66f53ded51739f9a3781fe0e Signed-off-by: Jesse Brandeburg Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e.h | 1 + drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+) diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index cfe8f83b8144..c8591b9f63e1 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -102,6 +102,7 @@ /* Ethtool Private Flags */ #define I40E_PRIV_FLAGS_NPAR_FLAG BIT(0) #define I40E_PRIV_FLAGS_LINKPOLL_FLAG BIT(1) +#define I40E_PRIV_FLAGS_FD_ATR BIT(2) #define I40E_NVM_VERSION_LO_SHIFT 0 #define I40E_NVM_VERSION_LO_MASK (0xff << I40E_NVM_VERSION_LO_SHIFT) diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index 831f97125c8f..185ac91ce78f 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -231,6 +231,7 @@ static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = { static const char i40e_priv_flags_strings[][ETH_GSTRING_LEN] = { "NPAR", "LinkPolling", + "flow-director-atr", }; #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_priv_flags_strings) @@ -2666,6 +2667,8 @@ static u32 i40e_get_priv_flags(struct net_device *dev) I40E_PRIV_FLAGS_NPAR_FLAG : 0; ret_flags |= pf->flags & I40E_FLAG_LINK_POLLING_ENABLED ? I40E_PRIV_FLAGS_LINKPOLL_FLAG : 0; + ret_flags |= pf->flags & I40E_FLAG_FD_ATR_ENABLED ? + I40E_PRIV_FLAGS_FD_ATR : 0; return ret_flags; } @@ -2686,6 +2689,17 @@ static int i40e_set_priv_flags(struct net_device *dev, u32 flags) else pf->flags &= ~I40E_FLAG_LINK_POLLING_ENABLED; + /* allow the user to control the state of the Flow + * Director ATR (Application Targeted Routing) feature + * of the driver + */ + if (flags & I40E_PRIV_FLAGS_FD_ATR) { + pf->flags |= I40E_FLAG_FD_ATR_ENABLED; + } else { + pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED; + pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED; + } + return 0; } -- 2.30.2